Allow SVG images to not taint the canvas with drawImage/drawPattern

Source/core/html/HTMLImageElement.cpp

Index: Source/core/html/HTMLImageElement.cpp
diff --git a/Source/core/html/HTMLImageElement.cpp b/Source/core/html/HTMLImageElement.cpp
index 571462bafbd548866e6cdda9033c2344098c91a6..d483f206f62cb2be767222e9cf8d39125315cecc 100644
--- a/Source/core/html/HTMLImageElement.cpp
+++ b/Source/core/html/HTMLImageElement.cpp
@@ -28,6 +28,7 @@
 #include "bindings/v8/ScriptEventListener.h"
 #include "core/dom/Attribute.h"
 #include "core/dom/EventNames.h"
+#include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLFormElement.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "core/loader/cache/ImageResource.h"
@@ -114,7 +115,7 @@ void HTMLImageElement::parseAttribute(const QualifiedName& name, const AtomicStr
     } else if (name == srcAttr)
         m_imageLoader.updateFromElementIgnoringPreviousError();
     else if (name == usemapAttr)
-        setIsLink(!value.isNull());
+        setIsLink(!value.isNull() && !shouldProhibitLinks(this));

[abarth-chromium, 2013/08/12 19:47:44]

Can we have an ASSERT in setIsLink?

[pdr., 2013/08/19 23:16:17]

Done.

     else if (name == onbeforeloadAttr)
         setAttributeEventListener(eventNames().beforeloadEvent, createAttributeEventListener(this, name, value));
     else if (name == compositeAttr) {